Rockasan base



FIG. 1 shows an isometric view of a rockasan base of my new design;

FIG. 2 shows the side elevation view of FIG. 1;

FIG. 3 shows the front elevation view of FIG. 1;

FIG. 4 shows the back elevation view of FIG. 1;

FIG. 5 shows the top view of FIG. 1; and,

FIG. 6 shows the bottom view of n FIG. 1.

The figures show a base for use with a Rockasan. 

The ornamental design for a rockasan base, as shown and described. 